아래의 문장들은
* 는 원래 지문에 있는 문장이고요..
** 는 제가 중간에 관계대명사나 접속사가 생략되었다고 생각하는 부분을 채워넣은 문장이예요...
제대로 제가 문장을 이해하고 있는 지 좀..봐주세요~
그런데. 원래 이렇게 대체적으로 주격관댸+be동사 혹은 주격관대+일반동사 를 거의 대부분 생략하나요...??* as a result, cities built inplaces as distant as afghanistan and pakistan were influenced by greek culture.
** as a result, cities (which were) built inplaces as distant as afghanistan and pakistan were influenced by greek culture.

*very strong wind storms called tornadoes commonly strike southern areas of the us.
**very strong wind storms (that are) called tornadoes commonly strike southern areas of the us.

*in addition, dancing honeybees must carry with thema small amount of the nectar taken from the site.
**in addition, dancing honeybees must carry with thema small amount of the nectar (that is) taken from the site.

*scientists have developed several theories explaining why most humans are right-handed.
**scientists have developed several theories which explain why most humans are right-handed. 주격관대 축약되면서 동사가 ing형이 됨
혹은
**scientists have developed several theories (which are) explaning why most humans are right-handed.

*human evolution has resulted in motor skills usually being managed by the left side of th brain.
- 여기서 being managed 는 어떻게 이해해야 되는 것인지 모르겠어~~....